qcacmn: Fix compilation error to enable genoa pcie

Fix compilation error while enabling QCA_WIFI_3_0_ADRASTEA
and HIF_PCIE flag for Genoa.

Change-Id: Ia8c44ae8623c22af415dc66061f38b59169f08a8
CRs-Fixed: 2266809

hif/src/pcie/if_pci.c

@@ -81,7 +81,7 @@ static inline void hif_pci_route_adrastea_interrupt(struct hif_pci_softc *sc)
 {
 }
 #else
-void hif_pci_route_adrastea_interrupt(struct hif_pci_softc *sc)
+static void hif_pci_route_adrastea_interrupt(struct hif_pci_softc *sc)
 {
 	struct hif_softc *scn = HIF_GET_SOFTC(sc);
 	unsigned int target_enable0, target_enable1;